Comprehensive and Detailed Explanation From Exact Extract:
The greatest advantage of network segmentation is the creation of security zones, which isolate systems into separate logical or physical network sections. According to CompTIA Security+ SY0-701, segmentation is a foundational security architecture practice used to reduce the attack surface, restrict lateral movement, enforce least privilege, and contain breaches. By dividing the network into zones-such as DMZ, internal, restricted, and guest-administrators can apply tailored access controls, firewall rules, IDS/IPS placement, and monitoring boundaries.
Segmentation provides defense-in-depth by preventing attackers from reaching critical systems even if they compromise a less-secure device. It also limits broadcast domains and improves traffic visibility. End-to-end encryption (A) protects confidentiality but is unrelated to segmentation. Decreased resource utilization (B) is not a primary benefit. Enhanced endpoint protection (C) applies to host controls, not network topology.
Configuration enforcement (D) is a benefit of centralized management, not segmentation.
Therefore, the correct answer is Security zones, the core outcome and highest-value advantage of segmentation.